Lennon wrote this about the worship of false idols. He felt organized religion did more harm than good. In "Imagine," he sang about a better world where there was "no religion." Lennon was not an atheist, but believed that god was something different to everyone. He also believed that people focus too much on the teacher (God) rather than what is supposed to be taught. In songs like this and "Imagine," Lennon's was trying to send the message that we should not let religion and other things get in the way of how we think life should be lived. In "Imagine," "Living for today" means to live as if there is no afterlife or god and to do the best you can. In this song, "I just believe in me" states his belief in his life regardless of anything else.